Shaikh Mostafa Al Masum Helmut Prendinger Keikichi Hirose Mitsuru Ishizuka Easy Living in the Virtual World: A Noble Approach to Integrate Real World Activities to Virtual Worlds. 466-473 2009 IAT http://dx.doi.org/10.1109/WI-IAT.2009.196 conf/iat/2009 db/conf/iat/iat2009.html#MasumPHI09